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Synonyms: 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt, Acid Orange 52, Helianthin, Orange III
Methyl orange shows pink colour in acidic medium and yellow colour in basic medium. Because it changes colour at the pH of a mid strength acid, it is usually used in titration for acids.
M 2185 (OTTO) Methyl orange, indicator Cas 547-58-0 - used for histological microscopy. Methyl orange is also used for histological microscopy.
Hazard Codes T
Certificate Of Analysis
(For eg. B 1615-0108)
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366-18-7
2,2'-Bipyridyl, 98%
1733-12-6
Cresol red, indicator GR
76-61-9
Thymol blue, GR
6211-24-1
Barium diphenylamine sulphonate, GR
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